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What is precocious puberty?
Puberty that happens early is called precocious puberty. This means a child's physical signs of sexual maturity develop too soon. This includes breast growth, pubic hair, and voice changes. These are known as secondary sexual characteristics. Precocious puberty happens before age 8 in girls, and before age 9 in boys. Most children with the disorder grow fast at first. But they also stop growing before reaching their full genetic height potential.
What causes precocious puberty?
It may be caused by tumors or growths on the ovaries, adrenal glands, pituitary gland, or brain. Other causes may include central nervous system problems, family history of the disease, or certain rare genetic syndromes. In many cases, no cause can be found for the disorder. There are two types of precocious puberty:
Gonadotropin-dependent. This is also known as central precocious puberty. This is the most common type of precocious puberty. Most girls and half of boys with precocious puberty have this type. The puberty is started by early secretion of hormones called gonadotropins. Gonadotropins include luteinizing hormone (LH) and follicle stimulation hormone (FSH). In girls, precocious puberty may be caused by the early maturity of the hypothalamus, pituitary glands, and ovaries. But in most cases, no cause can be found.